Acoustical Design of Small Rooms

Computer Simulation Techniques for Acoustical Design of Rooms

After decades of development room acoustical computer models have matured. Hybrid methods combine the best features from image source models and ray tracing methods and have lead to significantly reduced calculation times. Due to the wave nature of sound it has been necessary to simulate scattering effects in the models. Today's room acoustical computer models have several advantages compared t...

Acoustical Measurement Standards for Stereo Listening Rooms

2011 This paper presents in‐room acoustical measurement standards as well as quantifiers of the environment itself for the purpose of high‐performance 2‐channel audio reproduction. Context and examples are offered in various metrics ranging from noise, time related elements, frequency response, room size and room construction. The various individual sections are covered each within their own re...

Computer Simulation Techniques for Acoustical Design of Rooms - How to Treat Reflections in Sound Field Simulation

The paper presents a number of problems related to sound reflections, and possible solutions or approximations that can be used in computer models. The problems include: specular and diffuse reflections, early and late reflections, scattering due to rough structure of surfaces, diffraction due to finite size of surfaces, curved surfaces, convex and concave surfaces, angle dependent absorption. ...

Humidifying Apparatus for Small Test Rooms.

Improved algorithms and methods for room sound-field prediction by acoustical radiosity in arbitrary polyhedral rooms.

This paper explores acoustical (or time-dependent) radiosity--a geometrical-acoustics sound-field prediction method that assumes diffuse surface reflection. The literature of acoustical radiosity is briefly reviewed and the advantages and disadvantages of the method are discussed. A discrete form of the integral equation that results from meshing the enclosure boundaries into patches is present...